Structure of PDB 8eg8 Chain I

Receptor sequence

>8eg8I (length=1341) Species: 562 (Escherichia coli)

VYSYTEKKRIRKDFGKRPQVLDVPYLLSIQLDSFQKFIEQDPEGQYGLEA
AFRSVFPIQSYSGNSELQYVSYRLGEPVFDVQECQIRGVTYSAPLRVKLR
LVIYEREAPEGTVKDIKEQEVYMGEIPLMTDNGTFVINGTERVIVSQLHR
SPGVFFDSDKGKTHSSGKVLYNARIIPYRGSWLDFEFDPKDNLFVRIDRR
RKLPATIILRALNYTTEQILDLFFEKVIFEIRDNKLQMELVPERLRGETA
SFDIEANGKVYVEKGRRITARHIRQLEKDDVKLIEVPVEYIAGKVVAKDY
IDESTGELICAANMELSLDLLAKLSQSGHKRIETLFTNDLDHGPYISETL
RVDPTNDRLSALVEIYRMMRPGEPPTREAAESLFENLFFSEDRYDLSAVG
RMKFNRSLLREEIEGSGILSKDDIIDVMKKLIDIRNGKGEVDDIDHLGNR
RIRSVGEMAENQFRVGLVRVERAVKERLSLGDLDTLMPQDMINAKPISAA
VKEFFGSSQLSQFMDQNNPLSEITHKRRISALGPGGLTRERAGFEVRDVH
PTHYGRVCPIETPEGPNIGLINSLSVYAQTNEYGFLETPYRKVTDGVVTD
EIHYLSAIEEGNYVIAQANSNLDEEGHFVEDLVTCRSKGESSLFSRDQVD
YMDVSTQQVVSVGASLIPFLEHDDANRALMGANMQRQAVPTLRADKPLVG
TGMERAVAVDSGVTAVAKRGGVVQYVDASRIVIKVNEDEMYPGEAGIDIY
NLTKYTRSNQNTCINQMPCVSLGEPVERGDVLADGPSTDLGELALGQNMR
VAFMPWNGYNFEDSILVSERVVQEDRFTTIHIQELACVSRDTKLGPEEIT
ADIPNVGEAALSKLDESGIVYIGAEVTGGDILVGKVTPKGETQLTPEEKL
LRAIFGEKASDVKDSSLRVPNGVSGTVIDVQVFTRDGVEKDKRALEIEEM
QLKQAKKDLSEELQILEAGLFSRIRAVLVAGGVEAEKLDKLPRDRWLELG
LTDEEKQNQLEQLAEQYDELKHEFEKKLEAKRRKITQGDDLAPGVLKIVK
VYLAVKRRIQPGDKMAGRHGNKGVISKINPIEDMPYDENGTPVDIVLNPL
GVPSRMNIGQILETHLGMAAKGIGDKINAMLKQQQEVAKLREFIQRAYDL
GADVRQKVDLSTFSDEEVMRLAENLRKGMPIATPVFDGAKEAEIKELLKL
GDLPTSGQIRLYDGRTGEQFERPVTVGYMYMLKLNHLVDDKMHARSTGSY
SLVTQQPLGGKAQFGGQRFGEMEVWALEAYGAAYTLQEMLTVKSDDVNGR
TKMYKNIVDGNHQMEPGMPESFNVLLKEIRSLGINIELEDE

3D structure

• PDB: 8eg8 An ensemble of interconverting conformations of the elemental paused transcription complex creates regulatory options.
• Chain: I
• Resolution: 3.3 Å

Enzymatic activity

• Enzyme Commision number: 2.7.7.6: DNA-directed RNA polymerase.

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	dna	I	W183 D199 R200 G537 R542	W182 D198 R199 G536 R541
BS02	dna	I	N139 R143 H165 G1261 K1262 R1269 M1273	N138 R142 H164 G1260 K1261 R1268 M1272
BS03	rna	I	Q510 Q513 R540 Q688 K1073 H1237 S1252 L1253 L1259	Q509 Q512 R539 Q687 K1072 H1236 S1251 L1252 L1258
BS04	1N7	I	Q46 Y179 S398 A399 V400 R452 E461 Y584	Q45 Y178 S397 A398 V399 R451 E460 Y583
BS05	1N7	I	Q725 Y726 E962 Q965 I966 A969	Q724 Y725 E961 Q964 I965 A968

Gene Ontology

Molecular Function

• GO:0003677 DNA binding
• GO:0003899 DNA-directed 5'-3' RNA polymerase activity
• GO:0005515 protein binding
• GO:0016779 nucleotidyltransferase activity
• GO:0032549 ribonucleoside binding
• GO:0034062 5'-3' RNA polymerase activity

Biological Process

• GO:0006351 DNA-templated transcription
• GO:0006352 DNA-templated transcription initiation
• GO:0006879 intracellular iron ion homeostasis
• GO:0009408 response to heat
• GO:0031564 transcription antitermination
• GO:0032784 regulation of DNA-templated transcription elongation
• GO:0036460 cellular response to cell envelope stress
• GO:0042128 nitrate assimilation
• GO:0044780 bacterial-type flagellum assembly
• GO:0046677 response to antibiotic
• GO:0048870 cell motility
• GO:0071973 bacterial-type flagellum-dependent cell motility
• GO:0090605 submerged biofilm formation
• GO:2000142 regulation of DNA-templated transcription initiation

Cellular Component

• GO:0000345 cytosolic DNA-directed RNA polymerase complex
• GO:0000428 DNA-directed RNA polymerase complex
• GO:0005737 cytoplasm
• GO:0005829 cytosol
• GO:0008023 transcription elongation factor complex
• GO:0016020 membrane

External links

• PDB: RCSB:8eg8, PDBe:8eg8, PDBj:8eg8
• PDBsum: 8eg8
• PubMed: 36795753
• UniProt: P0A8V2|RPOB_ECOLI DNA-directed RNA polymerase subunit beta (Gene Name=rpoB)